: Veterinarians must monitor for drug interactions and side effects such as vomiting, lethargy, or seizures. Where to Buy
: Certain breeds, particularly herding dogs like Australian Shepherds and Collies, may have a genetic mutation (MDR1) that makes them hypersensitive to specific active ingredients like ivermectin.
: Many local stores, including Tractor Supply Company and Petco , carry these medications with a valid script. Risks of "OTC" Alternatives can you buy heartworm medicine for dogs over the counter
: It is dangerous to administer preventative medication if a dog already has an active heartworm infection. Giving these drugs to an infected dog can cause a severe, potentially fatal, shock-like reaction as the immature larvae die off suddenly. Dosage Accuracy : Medications like Heartgard Plus or Iverhart Plus
over the counter (OTC) . The U.S. Food and Drug Administration (FDA) regulates these preventatives as drugs to ensure they are used safely and effectively. Why a Prescription is Required : Veterinarians must monitor for drug interactions and
are dosed based on a dog's current weight. Incorrect dosing can lead to ineffective protection or accidental overdose.
: Often the most convenient place to purchase immediately after a test. Risks of "OTC" Alternatives : It is dangerous
In the United States, you legally buy heartworm medication for
Christmas